enholm



(N0 Modl.)

0. A. ENHOLM. GALVANIO BATTERY.

WITNESSES: M

ATTORNEYS.

N. PETERS Plmlollllmgmuher, Washinglun, D c.

UNITED STATES I PATENT OFFICE.

OSCAR A. ENI'IOLM, OF NEWV YORK, N. Y., ASSIGNOR OF ONE-SIXTH TO IVAR I-I. ENIIOLM, OF SAME PLACE.

GALVAN IC BATTE RY.

SPECIFICATION forming part of Letters Patent No. 415,963, dated November 26, 1889;

Application filed April 19, 1889. Serial No. 307,702- (No model.)

To all whom it may concern: with the strong solution in the adjacent com- Be it known that I, OSCAR A. ENHOLM, a partment, and vice versa; but this dense-carresident of the city, county, and State of New boil partition, while separating the weak from York, have invented an Improved Electric the strong solution and preventing their miX- 5 Battery, of which the following is a specificaing, acts as a conductor between the two sotion. lutions, whereby the internal action of the The object of my invention is to simplify battery is increased and the partition is not the construction of electrical batteries and to injured by the action of the chemicals in the render them very durable, while requiring battery. 1o comparatively little attention. D are the zinc or negative electrodes of the The invention consists in the combination battery which I place in the weak solution, of a battery-jar for holding chemical solubeing shown in the drawings in the comparttions with a dense partition or wall within it ment a. for separating two solutions, said partition or In Figs. 1 and 2 of the drawings I have r 5 wall acting to prevent the passage of one soshown two compartmentsaand two electrodes lution into the other, while serving as a con D, said electrodes being coupled together by ductor between the solutions. a wire d.

The invention further consist-s in the de- I11 the compartment b, or in the strong sotails of improvement and the combinations lution, I place one or more carbon electrodes 20 of parts, that will be more fully hereinafter E, that form the positive pole of the battery.

set forth. When more than one of these electrodes E Reference is to be had to the accompanying are used, they are all put into connection with a drawings, forming part of this specification, a single wire 6, that connects with the main wherein conductor in the usual manner. 2 5 Figure 1 is a vertical cross-section, on the The electrodes E are made in the form of plane of the line 0 c, Fig. 2, of an electrical porous carbon cups and contain strong acid, battery constructed according to my invenwhich gradually percolates through the cup, tion. Fig. 2 is a plan View of the same, and and thereby replenishes the strong solution Fig. 3 is a plan view of a modification. as it is weakened by the action of the battery. 0 Referring now to the drawings, the letter A From the above it will be seen that the cups represents a jar or receptacle, which may be E serve the double purpose of the positive of any suitable size, shape, and mat-erial,and pole of the battery and of a retainer of acid adapted to hold chemical solutions. WVithin tov replenish the strong solution. the jar or receptacle A are two dense parti- By placing the zinc or negative electrodes 3 5 tions 13 B, extending from wall to wall of the D in a weak solution and separating said jar and along the bottom of the same, so solution from the strong solution, so that the as to form water-tight compartments a a two solutions cannot mix, the zinc will not be and Z). (See Figs. 1 and 2.) In the comparteaten by the acid as fast as if the strong soment at, I place a weak chemical solution of, lution could reach the weak solution to in- 40 say, sulphuric acid and water, and in the crease its strength, and therefore the polarizacompartment 17,1 place a similarbut stronger tion of the negative pole will be comparasolution; but it is evident that the positions tively slow. of the weak and strong solutions could be re- Althoughin Figs. 1 and 2 two partitions B versed-that is to say, the strong solution and two compartments a are shown, it is evi- 45 could be in a and the weak solution in b,whi1e dent that one partition B and one compartany other desired kind of chemical solution ment a would answer in many cases. In Fig. could be used. 3 I have shown a battery having one com- The wall or partition B, I prefer to make of partment a and one partition B. In this case dense carbon,'which will prevent the weak the partition 13 is circular and is situated at I00 50 solution from one compartment a or b percoabout the center of the jar A, the space belating through the partition B and mixing tween the outer walls of the partition B and the inner walls of the jar A forming the compartment a, while the space incl'osed by the partition 13 constitutes the compartment 1).

Having now described my invention, what 5 I claim is 1. In a battery, the jar or receptacle A, combined with a dense partition which is impermeable to the solution on either side of it, but which is an electric conductor between the 10 solutions, substantially as described.

2. In a battery, the jar or receptacle A, combined with a dense-carbon partition i111- permeable to the solutions on either side of it, but which is an electric conductor between the solutions, and with the positive, electrode in one compartment and the negative electrode in the other compartment, substantially as described.

3. In a battery, the jar A, having the dense and impermeable carbon partition B, combined with the porous carbon cup E, substantially as described.

OSCAR A. ENHOLM.

Witnesses:

T. F. BOURNE, HARRY M. TURK. 

